Jack



June 26, 1934. J. F. QUINN l,964,173

JACK

Filed Dec. 30, 1932 gmc/rm clfluinn Patentecl June 26, 1934 UNITD STATES rrENT FFIC 5 Claims.

This invention relates' to jacks and more particularly to an improved type O jack for use in liiting vehicles, trucks or the'like.

An object of this invention is to provide a jack Which is so constructed that it can be readily positioned beneath the desired part of a Vehicle and Which embodies features to prevent the ready tippmg over of the jack.

Another object of this invention is to provide in a jack construction of this kind means Whereby the jack may be operated at a point remote thereirom and ina position at one side o the Vehicle.

A further object of the invention is to provide a jack having an enlarged or elcngated base portion and a swingab-Ie Operating means so that the jack Can be readilyolded up and carried Within the'tool box of the Vehicle.

The above and Various other Objects and advantages of this invention Will in part be described and in part be understood from the ollowing detailed description of the' present' preerred embodiment, the same being illu'str'ated in the accompanying dravving, whereinz Figure 1 is a detail side elevation partly broken away of a device constructed according to the preferred embodiment of this invention.

Figure 2 is a fragmentary top plan view of the device.

Figure 3 is a fragmentary detail front elevation of the Operating end of the jack.

Referring 'to the drawing Wherein like numerals of reference designate corresponding parts throughoutthe several views, the numeral 10 designates generally a base Which has positioned at one end thereof a vertically extending upright or standard 11 provided With a tubular member 12. A threaded shaft 14 is mounted or movement vertically Within this tubular member 12, :and a rotatable nut member 15 is disposed on top of the standard including the uprights 11 and the hoilow member 12. This nut member 15 is provided With gear teeth 16 of the beveied type and a shaft support 17 is disposed beneath the beveled gear 16. A shaft 18 is rotatably engaged With this hanger or support 17, and a pinion or beveled gear 19 is secured to this shaft 18 and engages the gear 16. A head 13 is swivelly mounted on top of the threaded shaft 14 and is provided With suitable recesses 20 so that this head 13 may engage round surfaces such as shafts, axle housings or the like, and will not slip from beneath these members.

A second upright or standard 21 is mounted on the base 10 in a position remote from the standard 11 and the opposite' end' of the' shaft 18 is" journaled* in this upright 2-1. A' U-sh'aped meri r ber 22 has each' leg thereof engaged about the shaft 13 and isswingable on this shaft; bv eled gear 2815 secured to the shaft 18 at the' enu opposite from the gear 19, and' is positioned be tween the parallel legs 0fthe' U-shaped mm: ber 22. A stub-shaft 24 is journale'd in the'bi'ght O the U-shape'd member 22; and a gea'r 2 5' fastened to'the stub'shaft 24 meshes Withthe beve'leii gear 23.

A ratchet or toothed'member 26 is secured to a shaft extension 28 WhCh'S'DVOtjHY secure'd, as at 29; to the stub'shaft 24. A* forked rock lever o'r jack Operating' member 30 is loos'ely monted' on' the shat 28 on opposite'sides of' the rat'chet 26, and a pawl 27 iscarried by'this lever BO'and the pawl'27 is svvingable to permit the r'otatiori'df the shaft28 in either direction'so' that* the jack maybe either raised or lower'ed. A-shaft support' or standard'31 is carried by the sha'ft"28 so'tha't' this swingable' shaft 28 Can be supported in* a stable'man'ner relative to the base 10% A collar 32 engages the shaft 28 and holds'the support'81 against longitudinaI movement on the shaft 28. A member 33 in the form of a fiexible member is connected at one end as by a collar 34 to the shaft 18 and by a collar 35 to the shaft 28 and acts to prevent undue strain on the U member 22. The threads On the threaded shaft 14 are preferably of the V-shaped type and in the present instance, these threads are construoted in double form so as to effect rapid Vertical movement of the head 13 upon rotation of the toothed nut 16.

In the use and operation of this device, the head 13 may be disposed beneath the axle or other desired portion of the Vehicle Which it is desired to raise, and the head 13 initially lowered so as to permit the easy mounting of the jack beneath the axle or Other portion of the Vehicle. Due to the enlarged construction of the base 10, the jack structure is more stable than Where a base of relatively small dimension is used. The jack structure may be positioned beneath the Vehicle so that the Operating lever 30 Will extend either forwardly of the Wheel or rearvvardly of the Wheel and to one side thereof. Through the use of the U-shaped member 22, the lever 30 can be swung to either side of the base 10 so that the jack Can be used on either the right or the left hand side of the Vehicle.

The pavvl 27 can be moved into desired position relative to the ratchet 26 and the lever 30 then rocked or oscillated, Which movement Will turn the shaft extension 28 and rotate the gears 25 and 23, respectively. Rotation of the gear 23 Will rotate the shaft 18 and the screw 14 Will then be either raised or lowered through the train of gears 19 and 16, respectively. Through the pro- Vision of the threads, as hereinbefore described, the lifting power of the jack is increased, and through the provision of the hinged shaft construction, as at 29, the entire jack structure can be folded up and carried Within the tool box of the Vehicle.

It is, of course, understood that Various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention Without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What is claimed is:-

1. In a jack including a base, a vertically movable member and means rotatable about a horizcntal axis operatively connected to the member for operation thereof; a remotely disposed operating means for said member comprising a substantially horizontally disposed elongated shaft coimected to said Operating means, a second shaft disposed at an angle to said first shaft, gear means for rotation of said first shaft by said 'second shaft, means engaging each of said shafts for holding said shafts in operative relation in selected positions of said second shaft, and means loosely carried by said second shaft for supporting said second shaft in selected position.

2. In a jack structure including a vertically movable member, and Operating means therefor; a horizontally disposed shaft connected to said Operating means, a second shaft disposed at an angle to the first shaft, gear means for operatively connecting said shafts together, means swingably carried by one of said shafts and engaging the other shaft to mount the second shaft for rotation in a selected position relative to the member, a lever carried by said second shaft, and dog and ratchet means carried by said lever and said second shaft.

3. In a jack structure including a vertically movable member, and Operating means therefor; a horizontally disposed shaft connected to said Operating means, a second shaft disposed at an angle to the first shaft, gear means for Operatively connecting said shafts together, a U-shaped member swingably carried by said first shaft and engaging said second shaft to mount said second shaft for rotation for swinging movement, operating means for said second shaft, and supporting means carried by said second shat to support said second shaft in a selected position relative to said Vertical member.

4. In a jack structure including a vertically movable member and Operating means therefor; a horizontally disposed shaft connected to said Operating means, a second shaft disposed at an angle to the first shaft, means loosely carried by said first shaft and engaging the second shaft to support said second shaft in operative position On either side of the first shaft, gear means for operatively connecting said shafts together, means engaging the second shaft for rotation thereo, and means connecting the two shafts together at a point intermediate the ends thereof to prevent Lmdue strain on said means loosely carried by said first shaft.

5. In a jack structure including a vertically movable member and Operating means therefor; a horizontally disposed shaft connected to said Operating means, a second shaft disposed at an angle to the first shaft, gear means for operatively connecting said shafts together, means loosely carried by said first shaft and engaging said second shaft to support one end of said second shaft in operative position relative to said first shaft, said supporting means permitting positioning of said second shaft in a substantially horizontal plane on either side of said first shaft, a shaft extension, means for pivotally securing said shaft extension to said second shaft, a supporting leg loosely carried by said shaft extension, and Operating means secured to said extension.

JOHN F. QUINN. 

